Re: How does CP/M refer to disk volumes?

If anything it's a hardware/bios mapping whatever media is selected
to the basic drive name[A-->P]. Same for hard disks or their
partitions.

Allison

Re: How does CP/M refer to disk volumes?

Roche... it is about time someone commented on your bad manners! Look up
the meaning of "INTOLERANCE" and apply that definition to your response to
Tim Murray's innocent question. I have read many of your posts over the
years and find largely, the contributions to be informative and of benefit;
in fact, I find them admirable but lacking in social grace. Your arrogance
and irrational rants detract from otherwise insightful research that
deserves better recognition than you seem capable of presenting. Get the
"newby" **** out of your addled head and give an honest guy a break.

It is possibly lacking in the Norman dialect and traditions, and possibly
unfamiliar to you, but we in more civilized societies believe in giving a
man a break (that means treating him with respect and dignity of a civil
response). You might very well be deficient of basic social graces, but
respectful dialogue should be paramount. Shame on you if you have not
learned this lesson earlier in your education! If this is not in keeping
with your beliefs, KEEP YOUR OPINIONS TO YOURSELF!!!

If you would like to compare credentials or get into a pissing match, I'm up
to the challenge!

-Thomas "Todd" Fischer

wrote in message
news:1187008239.254412.25700@22g2000hsm.googlegrou ps.com...
On 13 août, 03:46, Tim Murray wrote his famous question:
> How does CP/M refer to disk volumes?
> By drive letters? Volume names? Something else?

Read The F... Manual!

(What are you doing here if you don't even know how CP/M disks are
named?)

Mr Emmanuel Roche

Re: How does CP/M refer to disk volumes?

On Aug 13, 8:11 pm, "Thomas \"Todd\" Fischer" wrote:
> Roche... it is about time someone commented on your bad manners! Look up
> the meaning of "INTOLERANCE" and apply that definition to your response to
> Tim Murray's innocent question. I have read many of your posts over the
> years and find largely, the contributions to be informative and of benefit;
> in fact, I find them admirable but lacking in social grace. Your arrogance
> and irrational rants detract from otherwise insightful research that
> deserves better recognition than you seem capable of presenting. Get the
> "newby" **** out of your addled head and give an honest guy a break.
>
> It is possibly lacking in the Norman dialect and traditions, and possibly
> unfamiliar to you, but we in more civilized societies believe in giving a
> man a break (that means treating him with respect and dignity of a civil
> response). You might very well be deficient of basic social graces, but
> respectful dialogue should be paramount. Shame on you if you have not
> learned this lesson earlier in your education! If this is not in keeping
> with your beliefs, KEEP YOUR OPINIONS TO YOURSELF!!!
>
> If you would like to compare credentials or get into a pissing match, I'mup
> to the challenge!
>
> -Thomas "Todd" Fischer
>
> wrote in message
>
> news:1187008239.254412.25700@22g2000hsm.googlegrou ps.com...
> On 13 août, 03:46, Tim Murray wrote his famous question:
>
> > How does CP/M refer to disk volumes?
> > By drive letters? Volume names? Something else?
>
> Read The F... Manual!
>
> (What are you doing here if you don't even know how CP/M disks are
> named?)
>
> Mr Emmanuel Roche

Re: How does CP/M refer to disk volumes?

CP67/CMS had drive letters even earlier, and maybe other
systems that I don't know about. But CMS doesn't use colon
delimited prefixes for drive letters.

DEC used colon delimited prefixes for devices, though.

-- glen

Re: How does CP/M refer to disk volumes?

*Thomas \"Todd\" Fischer* wrote on Tue, 07-08-14 02:11:
>It is possibly lacking in the Norman dialect and traditions

Well I certainly have had my head bitten off by overly sensitive
Americans too in the past. Once my big misdeed was referring to the
technical difficulty a woman was inquiring about as "your problem" - oh
boy did she have a dig into me then!

Noone ever accused our M. Roche of overpoliteness yet but I have always
got on better with rude people knowing their stuff than those very
friendly and courteous nincompoops some helplines are riddled with.

And Emmanuel, what the volumes are named and what is shown, i.e. A,B,C
etc is one thing, but if I rember correctly they are called and
referred to as 0, 1, 2 etc. internally - one half-byte iirc.

Re: How does CP/M refer to disk volumes?

Hello Axel-

Just a bit of insight here from my perspective as one of the documented
"pioneers" of personal computing... none of us is going to be here forever.
Given that premise, and the very existence of this special interest group,
it is our implied responsibility to share our collective experience with
others who wish to follow in our footsteps, even if we stepped in **** in
the process. We should not discourage or deny access to others less
knowledgable for something that seems basic. Instead we should either
answer their query with understanding and compassion, or point them to a
resource that will resolve their quest and hopefully encourage them to
continue our efforts to preserve and advance a subject that binds us all.

You never know what potential value a novice may bring to this group in
possibly discovering some new, unknown resource of materials or knowledge
that we weren't aware of before. Why burn a bridge because an infant wishes
to cross?

If Roache's past despicable behavior can be considered acceptable in
anyone's culture, "that pig's gonna need a lot more lipstick" in my book!

Respectfully,

-Thomas "Ain't dissin' no one" Fischer

"Axel Berger" wrote in message
news:200708141323.a63084@b.maus.de...
> *Thomas \"Todd\" Fischer* wrote on Tue, 07-08-14 02:11:
>>It is possibly lacking in the Norman dialect and traditions
>
> Well I certainly have had my head bitten off by overly sensitive
> Americans too in the past. Once my big misdeed was referring to the
> technical difficulty a woman was inquiring about as "your problem" - oh
> boy did she have a dig into me then!
>
> Noone ever accused our M. Roche of overpoliteness yet but I have always
> got on better with rude people knowing their stuff than those very
> friendly and courteous nincompoops some helplines are riddled with.
>
> And Emmanuel, what the volumes are named and what is shown, i.e. A,B,C
> etc is one thing, but if I rember correctly they are called and
> referred to as 0, 1, 2 etc. internally - one half-byte iirc.
>

Re: How does CP/M refer to disk volumes?

Do you mean IBM's CMS running on IBM mainframes under VM/370, VM/XA etc.?
Didn't that have "minidisks" or how they were called, like A1, A2, etc. so with
a digit after the alphabetic character?

Regards,
Freek.
email: f.heite ATT hccnet DOTT nl

Re: How does CP/M refer to disk volumes?

On Tue, 14 Aug 2007 13:23:00 +0200, Axel_Berger@b.maus.de (Axel
Berger) wrote:
>
>And Emmanuel, what the volumes are named and what is shown, i.e. A,B,C
>etc is one thing, but if I rember correctly they are called and
>referred to as 0, 1, 2 etc. internally - one half-byte iirc.

A: is not a volume name, it's a drive reference. It could be simply
drive 0.

A Volume name is best illustrated in UCSD Psystem where if you put the
wrong disk in it will say insert COMP in device 1 or PASNS in device
0.

CP/M does not name the media. The usualy application at the OS level
for names volumes is checking for changed media. CP/M does this by
reading the directory [logging it in] and creating a check pattern in
memory located at CHKn in the DPB so that is media is changed the
check string will not match and the system makes the disk RO and
squwaks.

Re: How does CP/M refer to disk volumes?

Hey Tim,

Don't get "spooled up" because of Roach's caustic reply. There are plenty
of good and knowledgeable people on this newsgroup who will willingly help
you along. We encourage you ask all that you seek and, perhaps, you will
later share your discoveries with others.

Re: How does CP/M refer to disk volumes?

Axel Berger wrote:
> Well I certainly have had my head bitten off by overly sensitive
> Americans too in the past. Once my big misdeed was referring to the
> technical difficulty a woman was inquiring about as "your problem" - oh
> boy did she have a dig into me then!

Ouch.. That is one of those "Women are from Venus, Men are from Mars.."
things. In a previous life, I ran a company that installed and serviced
intercom systems for use in medical/surgical facilities. After being chewed
out by the nurse-manager over a functional issue and realizing that it was a
simple adjustment, I got as far as saying "Oh, that's not a problem.." and
Kaboom! She took it as an invalidation of her viewpoint rather than a lead-in
to my promise for swift repair. I was lucky to escape with my life...

There are an unfortunate number of folks in this world who seem to work
overtime at finding offense in any communication. Hell, hang out on
comp.lang.perl.misc for daily examples!

Steve

Re: How does CP/M refer to disk volumes?

Freek Heite wrote:
> glen herrmannsfeldt wrote:
>
>>>CP67/CMS had drive letters even earlier, and maybe other
>>>systems that I don't know about. But CMS doesn't use colon
>>>delimited prefixes for drive letters.
> Do you mean IBM's CMS running on IBM mainframes under VM/370, VM/XA etc.?
> Didn't that have "minidisks" or how they were called, like A1, A2, etc. so with
> a digit after the alphabetic character?

Well, the letter specifies the minidisk, the number relates to what
kind of access you can do on the disk. The number was optional.

-- glen

Re: How does CP/M refer to disk volumes?

Okay, so if you want to know the scoop: In another forum, someone was saying
something about drive letters and "since the days of DOS." I spent my salad
days with DOS and I knew it inside and out, but I had a hunch that CP/M used
drive letters ... from what I hear DOS was pretty much ripped off CP/M ...
but I know nothing about CP/M so I thought I would check out the facts before
making a claim.

Re: How does CP/M refer to disk volumes?

In Tim Murray writes:
> [...]
> I had a hunch that CP/M used drive letters ...

And user areas, 0-15 iirc.
> from what I hear DOS was pretty much ripped off CP/M ...

Actually DOS was IBM's VSE predecessor. You mean M$-DOS, which was QDOS
(Quick & Dirty OS) bought by M$.
> but I know nothing about CP/M so I thought I would check out the facts
> before making a claim.

A long time ago someone told me Gary Kildall teethed on a DEC System10,
and that's why CP/M had drive letters, too. May be an urban legend, though.
--
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